| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more contributor license |
| * agreements. See the NOTICE file distributed with this work for additional information regarding |
| * copyright ownership. The ASF licenses this file to You under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance with the License. You may obtain a |
| * copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software distributed under the License |
| * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express |
| * or implied. See the License for the specific language governing permissions and limitations under |
| * the License. |
| */ |
| package org.apache.geode.perftest.yardstick.analysis; |
| |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.HdrHistogram.Histogram; |
| import org.HdrHistogram.HistogramLogReader; |
| import org.yardstickframework.probes.PercentileProbe; |
| |
| import org.apache.geode.perftest.analysis.ProbeResultParser; |
| import org.apache.geode.perftest.yardstick.hdrhistogram.HdrHistogramWriter; |
| |
| /** |
| * Parses the output from {@link PercentileProbe} and reports the |
| * 99% percentile latency in microseconds. |
| */ |
| public class YardstickHdrHistogramParser implements ProbeResultParser { |
| public static final String sensorOutputFile = HdrHistogramWriter.FILE_NAME; |
| |
| public Histogram histogram = null; |
| |
| public void parseResults(File resultDir) throws IOException { |
| File sensorData = new File(resultDir.getParent(), sensorOutputFile); |
| |
| HistogramLogReader reader = new HistogramLogReader(sensorData); |
| |
| final Histogram nextIntervalHistogram = (Histogram) reader.nextIntervalHistogram(); |
| |
| if (histogram == null) { |
| histogram = nextIntervalHistogram; |
| } else { |
| histogram.add(nextIntervalHistogram); |
| } |
| } |
| |
| @Override |
| public void reset() { |
| histogram = null; |
| } |
| |
| @Override |
| public List<ResultData> getProbeResults() { |
| List<ResultData> results = new ArrayList<>(3); |
| results.add(new ResultData("median latency", histogram.getValueAtPercentile(50))); |
| results.add(new ResultData("90th percentile latency", histogram.getValueAtPercentile(90))); |
| results.add(new ResultData("99th percentile latency", histogram.getValueAtPercentile(99))); |
| results.add(new ResultData("99.9th percentile latency", histogram.getValueAtPercentile(99.9))); |
| results.add(new ResultData("average latency", histogram.getMean())); |
| results.add(new ResultData("latency standard deviation", histogram.getStdDeviation())); |
| results.add(new ResultData("latency standard error", |
| histogram.getStdDeviation() / Math.sqrt(histogram.getTotalCount()))); |
| results.add(new ResultData("average ops/second", ((double) histogram.getTotalCount()) |
| / (histogram.getEndTimeStamp() - histogram.getStartTimeStamp()) * 1000)); |
| return results; |
| } |
| } |